Book Image

Full Stack Development with Spring Boot 3 and React - Fourth Edition

By : Juha Hinkula
5 (1)
Book Image

Full Stack Development with Spring Boot 3 and React - Fourth Edition

5 (1)
By: Juha Hinkula

Overview of this book

If you’re an existing Java developer who wants to go full stack or pick up another frontend framework, this book is your concise introduction to React. In this three-part build-along, you’ll create a robust Spring Boot backend, a React frontend, and then deploy them together. This new edition is updated to Spring Boot 3 and includes expanded content on security and testing. For the first time ever, it also covers React development with the in-demand TypeScript. You’ll explore the elements that go into creating a REST API and testing, securing, and deploying your applications. You’ll learn about custom Hooks, third-party components, and MUI. By the end of this book, you'll be able to build a full stack application using the latest tools and modern best practices.
Table of Contents (23 chapters)
1
Part I: Backend Programming with Spring Boot
8
Part II: Frontend Programming with React
14
Part III: Full Stack Development
21
Other Books You May Enjoy
22
Index

Handling race conditions

If your component makes several requests quickly, it can lead to a race condition that can create unpredictable or incorrect results. Network requests are asynchronous; therefore, requests don’t necessarily finish in the same order as they were sent.

The following example code sends a network request when the props.carid value changes:

import { useEffect, useState } from 'react';
function CarData(props) {
  const [data, setData] = useState({});
  useEffect(() => {
    fetch(`https ://carapi .com/car/${props.carid}`)    .then(response => response.json())
    .then(cardata => setData(cardata))
  }, [props.carid]);
  
  if (data) {
    return <div>{data.car.brand}</div>;
  } else {
    return null;
  }
continue...

Now, if carid changes quickly multiple times, the data that is rendered might not be from the last request that was sent.

We can use the useEffect cleanup function to avoid race conditions. First...